<optgroup id='instance_info' instance_type={{ instance_type }}  snapshot_config={{ snapshot_config }} label="最近{{ snapshot_day }}天数据共{{ result_snapshot_total }}个快照(实例类型:{{ instance_type }})">
{% for i in result %}
    {% for values in i %}
        <option id="snapshot_values">{{ values }}</option>
    {% endfor %}
{% endfor %}
</optgroup>